參數(shù)資料
型號(hào): ISL81387
廠商: Intersil Corporation
英文描述: ±15kV ESD Protected, Dual Protocol (RS-232/RS-485) Transceivers(±15kV ESD保護(hù),雙協(xié)議(RS-232/RS-485)收發(fā)器)
中文描述: ± 15kV的ESD保護(hù),雙協(xié)議(RS-232/RS-485)收發(fā)器(± 15kV的ESD保護(hù),雙協(xié)議(RS-232/RS-485)收發(fā)器)
文件頁數(shù): 10/27頁
文件大小: 1092K
代理商: ISL81387
10
FN6201.1
December 20, 2005
RS-485 DRIVER SWITCHING CHARACTERISTICS (SLOW DATA RATE (115kbps, QFN ONLY), 485/232 = V
CC
, SLEW = 0V, SPB = V
CC
)
Driver Differential Input to Output
Delay
t
DLH
, t
DHL
R
DIFF
= 54
, C
L
= 100pF (Figure 2)
Full
800
1500
2500
ns
Driver Output Skew
t
SKEW
R
DIFF
= 54
, C
L
= 100pF (Figure 2)
Full
-
350
1250
ns
Driver Differential Rise or Fall Time
t
R
, t
F
R
DIFF
= 54
, C
L
= 100pF (Figure 2)
Full
1000
2000
3100
ns
Driver Enable to Output Low
t
ZL
C
L
= 100pF, SW = V
CC
(Figure 3)
Full
-
32
600
ns
Driver Enable to Output High
t
ZH
C
L
= 100pF, SW = GND (Figure 3)
Full
-
300
600
ns
Driver Disable from Output Low
t
LZ
C
L
= 15pF, SW = V
CC
(Figure 3)
Full
-
31
60
ns
Driver Disable from Output High
t
HZ
C
L
= 15pF, SW = GND (Figure 3)
Full
-
24
60
ns
Driver Enable from Shutdown to
Output Low
t
ZL(SHDN)
R
L
= 500
, C
L
= 100pF, SW = V
CC
(Figure 3)
(Note 13)
Full
-
65
800
ns
Driver Enable from Shutdown to
Output High
t
ZH(SHDN)
R
L
= 500
, C
L
= 100pF, SW = GND (Figure 3)
(Note 13)
Full
-
420
800
ns
Driver Maximum Data Rate
f
MAX
R
DIFF
= 54
, C
L
= 100pF (Figure 2)
Full
-
800
-
kbps
RS-485 RECEIVER SWITCHING CHARACTERISTICS (485/232 = V
CC
, ALL VERSIONS AND SPEEDS)
Receiver Input to Output Delay
t
PLH
, t
PHL
(Figure 4)
Full
20
50
90
ns
Receiver Skew | t
PLH
- t
PHL
|
t
SKEW
(Figure 4)
Full
-
0.1
10
ns
Receiver Maximum Data Rate
f
MAX
Full
-
40
-
Mbps
RECEIVER ENABLE/DISABLE CHARACTERISTICS (ALL MODES AND VERSIONS AND SPEEDS)
Receiver Enable to Output Low
t
ZL
C
L
= 15pF, SW = V
CC
(Figure 5)
Full
-
22
60
ns
Receiver Enable to Output High
t
ZH
C
L
= 15pF, SW = GND (Figure 5)
Full
-
23
60
ns
Receiver Disable from Output Low
t
LZ
C
L
= 15pF, SW = V
CC
(Figure 5)
Full
-
24
60
ns
Receiver Disable from Output High
t
HZ
C
L
= 15pF, SW = GND (Figure 5)
Full
-
25
60
ns
Receiver Enable from Shutdown to
Output Low
t
ZLSHDN
C
L
= 15pF, SW = V
CC
(Figure 5)
(Note 13)
RS-485 Mode
Full
-
260
700
ns
RS-232 Mode
25
-
35
-
ns
Receiver Enable from Shutdown to
Output High
t
ZHSHDN
C
L
= 15pF, SW = GND (Figure 5)
(Note 13)
RS-485 Mode
Full
-
260
700
ns
RS-232 Mode
25
-
25
-
ns
NOTES:
7. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless
otherwise specified.
8. Supply current specification is valid for loaded drivers when DEN = 0V.
9. Applies to peak current. See “Typical Performance Curves” for more information.
10. R
IN
defaults to RS-485 mode (>15k
) when the device is unpowered (V
CC
= 0V), regardless of the state of the 485/232 pin.
11. V
CC
5.25V.
12. The Slew pin has a pull-up resistor that enables only when in RS-485 mode (485/232 = V
CC
).
13. ON, RXEN, and DEN all simultaneously switched Low-to-High.
Electrical Specifications
Test Conditions: V
CC
= 4.5V to 5.5V, C1 - C4 = 0.1
μ
F, V
L
= V
CC
(for QFN only), Unless Otherwise Specified.
Typicals are at V
CC
= 5V, T
A
= 25°C (Note 7)
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
TYP
MAX
UNITS
ISL81387, ISL41387
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